A, B and C can do a piece of work in 15 days, 10 days and 6 days respe – McqOptions

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1.	A, B and C can do a piece of work in 15 days, 10 days and 6 days respectively. How long will they take to do it, if all the three work together?
A.	7 days
B.	5 days
C.	3 days
D.	2.5 days
Answer» D. 2.5 days

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